Mukwonago is a village in the U.S. state of Wisconsin. The population was 8,262 at the 2020 census. The village is located mostly within the Town of Mukwonago in Waukesha County, with a small portion extending into the Town of East Troy in Walworth County. Of its population, 8,040 are in Waukesha County and 222 are in Walworth County.